Motorola C550 ユーザーズマニュアル

6 
Network API  
 

35 

Notes 

It is important to take into consideration the blocking nature of many javax.microedition.io 
and java.io object methods with regards to networking applications. It is advisable to 
spawn another thread specifically dedicated to retrieving data in order to keep the user 

interface interactive. If a single thread is used to retrieve data on a blocking call, the user 
interface becomes inactive with the end-user perceiving the application as “dead”. 
Reading from an 

InputStream

 using an array is faster then reading byte by byte, when 

the length of the data is known.  For example, if the content length is provided in the 
header of the 

HttpConnection

, then an array of the specified size can be used to 

read the data. 
The 

InputStream

 and 

OutputStream

 as well as the 

Connection

 object need to 

be completely closed. 
An application in the paused state can still continue to actively use the networking 

facilities of the Motorola C370, C450, and C550 series of handsets. 
The platform does not support simultaneous voice and data transmissions.